- Continued work on SearchRequest migration and fixed some more QueryBuilder migration too

src/Query/Having.php

@@ -5,6 +5,8 @@ namespace Ulmus\Query;
 use Ulmus\Common\EntityField,
     Ulmus\Common\Sql;
 
+use Ulmus\QueryBuilder\QueryBuilderInterface;
+
 class Having extends Fragment {
     const SQL_TOKEN = "HAVING";